KENTWOOD, MI -- Charles Allen Brown told others he planned to rob someone about an hour before a drug ripoff led to the January killing of Michael Bockheim, Kentwood police said.

Brown, 19, is held in a South Carolina jail pending extradition to Michigan, while his alleged accomplice, Vernon Lewis Heath, 21, turned himself in to police this morning on charges of armed robbery and conspiracy to commit armed robbery.

Kentwood District Judge William Kelly set Heath's bond at $250,000.

A probable-cause affidavit filed in Heath’s case provided details of the Jan. 15 robbery and killing.

It included allegations that at least two witnesses overheard Brown talk about committing a robbery an hour before the shooting occurred.

Bockheim was a passenger in a vehicle driven by Nicholas Slater, 28, when the defendants, both Grand Rapids residents, allegedly tried to rob them at gunpoint in the 4000-block of Arbor Lane SE

Brown fired a shot that grazed Slater’s wrist, but struck Bockheim in the chest, police said in court records.

Heath then stole marijuana from Slater, court records said. The suspects then ran from the scene, police said.